Shuttle tension device.



E. R. HOLMES & S. DAVIS.

SHUTTLE TENSION DEVICE.

APPLICATION FILED NOV 17. 1915.

Patented May 15, 1917.

2 SHEETSSHEET 1.

E. R HOLMES & s. DAVIS.

SHUTTLE TENSION DEVICE.

APPLICATION FILED NOV. 17, 19l5.

1 ,226,5 1 9.. Patented May 15, 1917.

2 SHEETS-SHEET 2.

457572 5526 fiZ/was 35772077 2Q Zzls: 4 dC-v' "nu: uomus wzrsns co.. PNOnrLnWO. vusmumaw, u c.

TINTTED STATES PATENT -FFT@E.

ELBRIDGE R. HOLMES AND SIMON DAVIS, OF WORCESTER, IVLASSACHUSETTS, ASSIGNORS TO CROMPTON & KNGVJLES LOOM WORKS, OF VIORQESTER, MASSACHUSETTS, A COT..-

PORATION OF MASSACHUSETTS.

SHUTTLE TENSION DEVICE.

Application filed November 17, 1915.

To all whom it may concern:

Be it known that we, ELBRIDGE R. Holmes and SIMON DAvIs, citizens of the United States, both residing at Worcester, in the county of \Vorcester and State of Massachusetts, have invented a new and useful Shuttle Tension Device, of which the following is a specification.

This invention relates to a shuttle tension device particularly designed for use in shut tles for narrow-ware or ribbon looms. These shuttles, as commonly constructed, carry a rotatably mountedbobbin from which the weft is drawn and some provision is necessary for applying yielding tension to the bobbin or to the weft thereon;

It is the general object of our invention to provide an improved tension device for such use in which the tension or drag upon the weft may be readily adjusted and in which the adjustment may be securely retained.

With this object in view an important feature of our invention relates to the provision of adjusting devices which are readily accessible after the tension device is in position in the shuttle.

Our invention also relates to certain arrangement and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

Three forms of our invention are show in the drawings in which Figure 1 is a plan view of a shuttle having one form of our invention mounted thereon;

Fig. 2 is a perspective view of the form of our invention shown in Fig. 1;

Fig. 3 is a longitudinal sectional view taken along the line 3-3 in Fig. 2;

Fig. 4 is a view similar to Fig. 3 but showing a modified form of our invention;

Fig. 5 is a transverse sectional View taken along the line 5-5 in Fig. 4.;

Fig. 6 is a longitudinal section of the shuttle taken along the line- 6-6 in Fig. 1, but showing a second modification of our invention;

Fig. 7 is a longitudinal sectional view of the second modification, and

Fig. 8 is an end elevation of the device shown in Fig. 7

Referring to the drawings, 10 indicates a shuttle for narrow-ware or ribbon looms having a bobbin or quill 11 rotatably mount- Specification of Letters Patent.

Patented May 15, 1917.

SeriaI No. 62,022.

ed therein, these parts being of the usual construction. The shuttle 10 is provided with an opening 12 (Fig. 6) extending entirely through the body of the shuttle, within which opening our improved tension device is mounted.

' This tension device, in the form shown in Figs. 1, 2 and 3, comprises a sleeve or shell 18 having a fixed head 14 at one end thereof and a movable head 15 at the opposite end. A swinging tension member 16 is rotatably mounted in the heads 14% and 15 and is provided with a weft engaging portion l6 at its outer or free end.

l/Vithin the sleeve 13 a collar 17 is secured to the member 16, said collar being engaged by one end of a spring 18 mounted within the sleeve and having its opposite end secured to the movable head 15.

The head 15 is retained within the sleeve 13 by spring wires 19 fixed at one end by solder or otherwise to the outer surface of the sleeve 13 and having their free ends 19 turned inwardly and projecting across the open end of the sleeve into position to engage notches 20 (Fig. 2) formed in the movable head 15. The wires 19 thus serve not only to retain the movable head in position but also to prevent rotation of the sleeve 13 within the body of the shuttle. The movable head 15 is provided with an outwardly extending slotted boss 21 adapted to be en gaged by a screw-driver inserted therein for a purpose to be described.

The tension device thus constructed is mounted in the shuttle by forcing the same into one end of the opening 12 and after being thus secured the tension of the spring 18 may be adjusted by inserting a screwdriver into the slotted boss 21, forcing the movable head inward until it clears the ends of the wires 19 and then turning the head to secure the desired tension. When released the head 15 will move outward into engagement with the wires 19 by which it will be held in adjusted position. It is thus possible to adjust the tension of the spring at any time without removing the tension device from the shuttle and when once adjusted the tension will be securely retained.

The modified form shown in Figs. 4 and 5 is essentially similar in its general features, but differs somewhat in details of construction. In this form the sleeve is drawn in at one end as indicated at 31 to retain the movable head 32 therein, and the fixed head 33 is secured within the sleeve 30 after the other parts have been assembled. The swinging member 16, the collar 17, and the spring 18 are exactly the same as in the previous form. The movable head 32 is provided with a series of teeth 32, and intervening notches 32 as shown in Fig. 5, the notches 32* being adapted to receive. the pins 34: mounted in the cylindrical wall of the sleeve 30. The head is slotted at 35 to permit the same to be readily adjusted and the operation and adjustment of the device is identical with that previously described.

In the form shown in Figs. 6, 7 and 8, the sleeve 40 is provided with inwardly preject ing teeth 11 at one end thereof adapted to engage lugs 42 formed upon the end of the movable head 43. The swinging member 16, the collar 17, and spring 18 are unchanged and the parts are retained in assembled position by a fixed head :44. The operation and adjustment of thisform of the device is as previously described.

Having thus described our invention it will be evident that other changes and modifications can be made therein without departing from. the spirit and scope thereof as set forth in the claims, and we do not wish to be otherwise limited to. the details herein disclosed, but what we claim is 1. In a loom, in. combination, a shuttle, a weft bobbin rotatably mounted therein, and a bobbin tension device yieldingly engaging the weft on said bobbin, said device comprising a sleeve fixed in an opening extending through said shuttle near one endthereof and perpendicular to the axis of said bobbin and having fixed and movable heads in its opposite ends, a weft-engaging member pivoted in said heads, a spring connectedatits opposite ends to said member and to said movable head, and means to secure said movable head in angularly adjusted position rela tively to said sleeve, said movable head being normally held in engagement with said securing meansby said spring, and being movable axially toward said arm against the pressure of said spring thereby disengaging said head from said securing means.

2. In loom, in combination, a shuttle, a weft bobbin rotatably mounted therein, and a. bobbin tension device yielclingly engaging the weft on said bobbin, said device comprising asleeve fixed in an opening extending through said shuttle near one endthereof and perpendicular to the axis of said bobbin andv having fixed and movable heads in its opposite ends, a weft-engaging memberpiw oted in said heads, a spring connected, at its opposite ends tosaid member and to said movable head, and means tosecure said movable head -in angularly adjusted position relatively to said sleeve, said spring being effective to provide tension for said weft engaging device and also to maintain said head normally in engagement with said securing means. a

3. In aloom, in combination, a shuttle, a

weft bobbin rotatably mounted therein, and

a bobbin tension device yieldingly engaging the weft on said bobbin, said device comprising a sleeve fixed in an opening extending through said shuttle near one end thereof and perpendicular to the axis of said bobbin, and having fixed and movable heads in its opposite ends, a weft-engaging member pivotedin said heads, a. spring connected at its opposite ends to said member and to said movable head, and means to secure said movable head in angularly adjusted position relatively to said sleeve, said head having provision for engagement with a tool by which said head. may be pressed inwardly to cause disengagement from said securing means, and by'which the head mayalso be turned to adjust the spring tension on said weft engaging device.

4. In a loom, in combination, a, shuttle, a weft bobbin rotatably. mounted therein, and a .tension device yieldingly engaging the weft on said bobbin, said device comprising a sleeve fixed in a an opening extending through said shuttle and having'fixe'd and movable heads in its opposite ends, aweftengaging member pivoted in said'heads, a spring connected at its opposite ends to said member and to said movable head, and means to secure said movable head. in angularly adjusted position relatively to said sleeve, said means comprisingcooperating teeth and lugs on said sleeve and head adapted ,to engage each other in a plurality of positions and normally held in fixed engagement bysaid spring.

5. In a loom, in combination, 2ft shuttle, a weft bobbin rotatably mounted therein, and a tension device yieldingly. engaging the weft on said bobbin, said device comprising a sleeve fixed in an openingextending through said shuttle :and'having fixed and movable heads in its opposite. ends, -a weft-engaging member pivoted in said heads, a spring connected at its opposite ends to said member and to said movable head, and means to secure said'movable head inadjusted position relatively to said sleeve, said means comprising inwardly extending lugs onsaid sleeve and notches in said movable head adapted to engage said lugs in any one of a plurality of relative angular positions.

Intestimony whereof -we have hereunto set our hands.

ELBRIDGE R. HOLMES. SIMON DAVIS.

Gopiesofthis patent may beo'btained for five cents each,..by addressing'the ffiommissionero! Patents,

Washington, D. 0. 

